WO2021176520A1 - Système de communication, dispositif de transmission, dispositif de réception, procédé de communication et programme - Google Patents

Système de communication, dispositif de transmission, dispositif de réception, procédé de communication et programme Download PDF

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Publication number
WO2021176520A1
WO2021176520A1 PCT/JP2020/008700 JP2020008700W WO2021176520A1 WO 2021176520 A1 WO2021176520 A1 WO 2021176520A1 JP 2020008700 W JP2020008700 W JP 2020008700W WO 2021176520 A1 WO2021176520 A1 WO 2021176520A1
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WIPO (PCT)
Prior art keywords
signal
sub
main signal
path
main
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PCT/JP2020/008700
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English (en)
Japanese (ja)
Inventor
優平 川上
尊広 久保
慎一 吉原
夏樹 安原
豪 矢沢
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日本電信電話株式会社
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Application filed by 日本電信電話株式会社 filed Critical 日本電信電話株式会社
Priority to US17/908,590 priority Critical patent/US20230087755A1/en
Priority to PCT/JP2020/008700 priority patent/WO2021176520A1/fr
Priority to JP2022504779A priority patent/JP7327638B2/ja
Publication of WO2021176520A1 publication Critical patent/WO2021176520A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass

Definitions

  • Embodiments of the present invention relate to communication systems, transmitters, receivers, communication methods and programs.
  • the transmission-side non-interruption device duplicates the user data frame to be transmitted and transmits it to a redundant route including two relay paths, and the reception-side non-interruption device performs selective reception with a selector. ..
  • the redundant section the short route and the long route may be switched due to delay or one-way disconnection. Even in such a case, since the frame order is managed by the sequence number, if the user data frame can be normally received from one of the redundant routes, the communication can be continued without interruption. It will be possible. Since the same signal is transmitted to the two relay paths, there is no deterioration of the data obtained on the receiving side depending on which path the user data frame selected by the selector on the receiving side has passed.
  • VLAN Virtual Local Area Network
  • the present invention is intended to provide a technique that enables multiplexing of main signal communication and sub-signal communication in a redundant path without assigning an identifier to a main signal such as a user data frame.
  • the communication system is a communication system that performs multiplex communication between a main signal and at least one sub signal via a redundant path between a transmitting device and a receiving device. Therefore, the transmitting device has a main signal duplication unit that replicates the main signal to be communicated on the main signal channel, and at least one sub that should be communicated on the sub signal channel, respectively, according to the number of routes of the redundant path. Based on the signal, the receiving device includes a delay unit that adjusts the transmission timing of the main signal for each route in the redundant route and transmits the main signal to each route of the redundant route.
  • a main signal selection unit that selects one of the main signals communicated on the main signal channel according to the reception timing of the main signal that has passed through each route of the route, or the selected main signal is either of the redundant paths. It is provided with a sub-signal decoding unit that decodes at least one sub-signal communicated in the sub-signal channel based on whether or not it has passed through the above-mentioned path.
  • FIG. 1 is a block diagram showing an example of a schematic configuration of a communication system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing an example of the functional configuration of the non-instantaneous interruption device.
  • FIG. 3 is a diagram showing an example of the hardware configuration of the non-instantaneous interruption device.
  • FIG. 4 is a flowchart showing an example of the transmission processing operation of the non-instantaneous interruption device.
  • FIG. 5 is a schematic diagram for explaining the operation of the communication system.
  • FIG. 6 is a flowchart showing an example of the reception processing operation of the non-instantaneous interruption device.
  • FIG. 1 is a block diagram showing an example of a schematic configuration of a communication system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing an example of the functional configuration of the non-instantaneous interruption device.
  • FIG. 3 is a diagram showing an example of the hardware configuration of the non-instantaneous interruption device
  • FIG. 7 is a block diagram showing an example of the configuration of a non-instantaneous interruption device in the communication system according to the second embodiment of the present invention.
  • FIG. 8 is a block diagram showing an example of the configuration of a non-instantaneous interruption device in the communication system according to the third embodiment of the present invention.
  • FIG. 9 is a schematic diagram for explaining the operation of the communication system according to the fourth embodiment of the present invention.
  • FIG. 10 is a schematic diagram for showing an example of a schematic configuration of the communication system according to the fifth embodiment of the present invention and for explaining the operation.
  • FIG. 11 is a block diagram showing an example of the configuration of the non-instantaneous interruption device in the communication system according to the fifth embodiment.
  • FIG. 12 is a schematic diagram for showing an example of a schematic configuration of the communication system according to the sixth embodiment of the present invention and for explaining the operation.
  • FIG. 13 is a block diagram showing an example of the configuration of the non-instantaneous interruption device in the communication system according to the sixth embodiment.
  • the communication system multiplexes signals between two non-interrupted devices by a redundant path including a plurality of relay paths.
  • a redundant path including a plurality of relay paths.
  • FIG. 1 is a block diagram showing an example of a schematic configuration of a communication system according to a first embodiment of the present invention.
  • the communication system includes a first non-instantaneous interruption device UA1 as a transmitting device, a second non-instantaneous interruption device UA2 as a receiving device, and a first relay path RR1 and a first relay path provided between them. 2
  • the relay path RR2 and the like are included.
  • a non-instantaneous interruption device UA when it is not necessary to particularly distinguish between the first non-instantaneous interruption device UA1 and the second non-instantaneous interruption device UA2, it will be referred to as a non-instantaneous interruption device UA.
  • the relay path RR when it is not necessary to distinguish between the two relay paths RR1 and RR2, it is referred to as the relay path RR.
  • the first relay path RR1 is a part of the first relay network (the network is abbreviated as NW in FIG. 1) NW1, and the second relay path RR2 is a part of the second relay network NW2. ..
  • NW the network
  • the relay network NW is not particularly limited, but may be, for example, an Ethernet (registered trademark) network.
  • the first non-instantaneous interruption device UA1 serving as a transmission device is transmitted by the same sub-signal channel as the first high-speed user terminal HST1 that inputs the main signal MS to be transmitted in the main signal channel to the first non-instantaneous interruption device UA1. It is connected to the first low-speed user terminal LST1 that inputs the sub-signal SS to be input.
  • the main signal MS is, for example, a user data frame including a header and a data payload
  • the sub signal SS is a user data signal which is a code sequence of 0 and 1.
  • the second high-speed user terminal HST2 into which the main signal MS received from the second non-instantaneous interruption device UA2 is input and the sub-signal SS received in the same manner are input to the second non-instantaneous interruption device UA2 serving as the receiving device.
  • the second low-speed user terminal LST2 to be used is connected.
  • the first non-instantaneous interruption device UA1 serving as a transmission device assigns a sequence number indicating the order to the input main signal MS, duplicates the input according to the number of relay paths RR, and transmits the sequence to each relay path RR. ..
  • the first non-instantaneous interruption device UA1 adjusts the transmission timing of the main signal MS for each relay path RR based on the input sub-signal SS. For example, the first non-instantaneous interruption device UA1 converts the sub signal SS into a delay, discards the sub signal SS itself, and imparts the converted delay to the communication of the main signal MS. Therefore, the only signal flowing through the relay path RR is the main signal MS.
  • the second non-instantaneous interruption device UA2 which serves as a receiving device, selects the main signal MS to be output to the second high-speed user terminal HST2 according to the reception timing of the main signal MS via each relay path RR. For example, the second non-instantaneous interruption device UA2 determines the first-arriving main signal MS based on the sequence number assigned to each received main signal MS, and deletes the sequence number from the first-arriving main signal MS. , Output to the second high-speed user terminal HST2. The second non-instantaneous interruption device UA2 discards the post-arrival main signal MS.
  • the main signal MS that arrives first from the first relay path RR1 is represented by a quadrangle with diagonal hatches
  • the main signal MS that arrives first from the second relay path RR2 is represented by a quadrangle with vertical and horizontal grid hatches. By expressing them, they are distinguished.
  • the white squares without hatching indicate that the main signal MS is to be attached later.
  • the numbers in the squares indicating the main signal MS represent the sequence numbers.
  • the second non-instantaneous interruption device UA2 decodes the sub signal SS based on which relay path RR the selected main signal MS has passed through, and outputs the sub signal SS to the second low speed user terminal LST2. For example, the second non-instantaneous interruption device UA2 determines which relay path RR the selected first-arrival main signal MS has passed through, and sets the sequence of the relay path RRs that received the first-arrival main signal MS to 0,1. Convert to a code sequence.
  • FIG. 2 is a block diagram showing an example of the functional configuration of the non-instantaneous interruption device UA.
  • the first non-instantaneous interruption device UA1 and the second non-instantaneous interruption device UA2 can adopt the same configuration. That is, FIG. 1 shows an example in which the first non-instantaneous interruption device UA1 is a transmitting device and the second non-instantaneous interruption device UA2 is a receiving device, but the opposite may be true.
  • the second non-instantaneous interruption device UA2 serves as a transmitting device
  • the first non-instantaneous interruption device UA1 serves as a receiving device
  • the main signal MS from the second high-speed user terminal HST2 and the sub-signal SS from the second low-speed user terminal LST2. Can also be transmitted to the first high-speed user terminal HST1 and the first low-speed user terminal LST1.
  • a high-speed user terminal HST when it is not necessary to particularly distinguish between the first high-speed user terminal HST1 and the second high-speed user terminal HST2, it is referred to as a high-speed user terminal HST.
  • low-speed user terminals LST when it is not necessary to distinguish between the two low-speed user terminals LST1 and LST2, they are referred to as low-speed user terminals LST.
  • the configuration related to transmission and the configuration related to reception may be separated, and the transmission device and the reception device may be formed separately.
  • the solid line arrow indicates the flow of the main signal MS or the sub signal SS
  • the broken line arrow indicates the flow of the control signal.
  • the non-instantaneous interruption device UA includes a sequence number assigning function unit 101, a main signal duplication function unit 102, a delay conversion function unit 103, and a delay control function unit 104 as functional components related to transmission. .. Further, the non-instantaneous interruption device UA includes a main signal selection function unit 105, a sequence number deletion function unit 106, a route determination notification function unit 107, and a sub signal decoding function unit 108 as function components related to reception. Further, the non-instantaneous interruption device UA includes a first user port UP1 and a second user port UP2, and a first relay port RP1 and a second relay port RP2.
  • relay port RP when it is not necessary to distinguish between the first user port UP1 and the second user port UP2, it is referred to as a user port UP. Similarly, when it is not necessary to distinguish between the two relay ports RP1 and RP2, they are referred to as relay port RP.
  • the first user port UP1 receives the main signal MS input from the high-speed user terminal HST on the transmitting side via the first user path UR1, and also receives the main signal MS via the first user path UR1. This is a port for transmitting the main signal MS to be output to the high-speed user terminal HST.
  • the second user port UP2 receives the sub-signal SS input from the low-speed user terminal LST on the transmitting side via the second user path UR2, and also receives the low-speed user on the receiving side via the second user path UR2. This is a port for transmitting a sub signal SS to be output to the terminal LST.
  • the first relay port RP1 transmits a main signal MS including a delay or no delay to the first relay path RR1 and receives a main signal MS including a delay or no delay from the first relay path RR1. It is a port.
  • the second relay port RP2 transmits a main signal MS including a delay or no delay to the second relay path RR2, and receives a main signal MS including a delay or no delay from the second relay path RR2. It is a port.
  • the sequence number assigning function unit 101 assigns a sequence number for identifying the order to the main signal MS to be transmitted on the main signal channel received on the first user port UP1. For example, if the main signal MS is a user data frame, the sequence numbering function unit 101 adds a sequence number that identifies the order of the frames to a part of the header or payload. The sequence number assigning function unit 101 supplies the main signal MS to which the sequence number is assigned to the main signal duplication function unit 102.
  • the main signal duplication function unit 102 assigns the main signal MS to which the sequence number supplied from the sequence number assignment function unit 101 is assigned according to the number of redundant paths, that is, the number of relay ports of the non-instantaneous interruption device UA. Duplicate according to. In the present embodiment, since the non-instantaneous interruption device UA has two relay port RPs, the main signal duplication function unit 102 is subjected to a sequence number by the sequence number assigning function unit 101 so that the main signal MS is two. The main signal MS to which is given is duplicated. The main signal duplication function unit 102 supplies the main signal MS to which these two sequence numbers are assigned to the delay control function unit 104.
  • the delay conversion function unit 103 converts the sub-signal SS received on the second user port UP2 and to be transmitted on the sub-signal channel into a delay. For example, if the sub signal SS is a user data signal having a code sequence of 0, 1, the delay conversion function unit 103 transmits from the first relay port RP1 according to the value of each bit in the user data signal, 0, 1. It is possible to determine which of the main signal MS to be used and the main signal MS transmitted from the second relay port RP2 to have a delay. The delay conversion function unit 103 supplies the delay conversion result to the delay control function unit 104.
  • the delay control function unit 104 sends the main signal MS to which the two sequence numbers supplied from the main signal duplication function unit 102 are assigned to the two relay port RPs, so that they are redundant paths, that is, two relay paths. It is transmitted to the non-instantaneous interruption device UA on the receiving side via the RR.
  • the delay control function unit 104 receives the two delay conversion results based on the delay conversion result supplied from the delay conversion function unit 103. Controls the transmission timing of the main signal MS. This timing control will be described in detail later.
  • the main signal selection function unit 105 When the main signal selection function unit 105 receives the main signal MS to which the sequence number is assigned by any of the two relay port RPs, it may be the first arrival to the non-instantaneous interruption device UA, or the second arrival. Determine if it was there. This can be determined by referring to the sequence number assigned to the received main signal MS.
  • the main signal selection function unit 105 selects the first-come-first-served main signal MS and supplies it to the sequence number deletion function unit 106, and discards the second-arrival main signal MS.
  • the main signal selection function unit 105 supplies the route determination notification function unit 107 with the first-come-first-served route information indicating the relay port that received the first-come-first-served main signal MS, that is, the relay route RR.
  • the sequence number deletion function unit 106 deletes the sequence number assigned to the main signal MS supplied from the main signal selection function unit 105.
  • the sequence number deletion function unit 106 sends the main signal MS from which the sequence number has been deleted to the first user port UP1 and transmits it to the high-speed user terminal HST on the receiving side via the first user path UR1. do.
  • the route determination notification function unit 107 determines which relay route RR of the redundant routes the first-come-first-served main signal MS has passed through based on the first-come-first-served route information supplied from the main signal selection function unit 105.
  • the route determination notification function unit 107 notifies the sub-signal decoding function unit 108 of the determination result.
  • the sub-signal decoding function unit 108 decodes the sub-signal SS transmitted on the sub-signal channel based on the determination result notified from the route determination notification function unit 107. For example, the sub-signal decoding function unit 108 sets the bit value to 0 when the first-come-first-served main signal MS has passed through the first relay path RR1, and 1 bit when the first-come-first-served main signal MS has passed through the second relay path RR2. Let it be a value. In this way, the sub-signal decoding function unit 108 can decode the sub-signal SS by converting the sequence of the relay path RR that has received the first-arriving main signal MS into a code sequence of 0 or 1. The sub-signal decoding function unit 108 sends the decoded sub-signal SS to the second user port UP2, and transmits it to the low-speed user terminal LST on the receiving side via the second user path UR2.
  • FIG. 3 is a diagram showing an example of the hardware configuration of the non-instantaneous interruption device UA.
  • the non-instantaneous interruption device UA can be configured by a computer as shown in FIG.
  • the non-instantaneous interruption device UA has a hardware processor 11 such as a CPU (Central Processing Unit). Then, in the non-instantaneous interruption device UA, the program memory 12, the data memory 13, the input / output interface 14, and the communication interface 15 are connected to the processor 11 via the bus 16.
  • a hardware processor 11 such as a CPU (Central Processing Unit).
  • the program memory 12 is a non-temporary tangible computer-readable storage medium such as a non-volatile memory such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive) that can be written and read at any time, and a non-volatile memory such as a ROM. It was used in combination with sex memory.
  • the program memory 12 stores programs necessary for the processor 11 to execute various control processes according to the present embodiment. That is, the sequence numbering function unit 101, the main signal duplication function unit 102, the delay conversion function unit 103, the delay control function unit 104, the main signal selection function unit 105, the sequence number deletion function unit 106, and the route shown in FIG.
  • the determination notification function unit 107 and the sub-signal decoding function unit 108 may both be realized by reading the program stored in the program memory 12 by the processor 11 and executing the program. Some or all of these processing function units are realized by various other formats including integrated circuits such as integrated circuits (ASIC: Application Specific Integrated Circuit) or FPGA (field-programmable gate array) for specific applications. May be done.
  • ASIC Application Specific Integrated Circuit
  • FPGA field-programmable gate array
  • the data memory 13 is used as a tangible computer-readable storage medium, for example, in combination with the above-mentioned non-volatile memory and a volatile memory such as RAM (Random Access Memory).
  • the data memory 13 is used to store various data acquired and created in the process of performing various processes. That is, in the data memory 13, an area for storing various data is appropriately secured in the process of performing various processes.
  • the input / output interface 14 is the above-mentioned user ports UP1 and UP2 shown in FIG. 2, and the high-speed user terminal HST and the low-speed user terminal LST can be connected via the user paths UR1 and UR2.
  • the communication interface 15 is the above-mentioned relay ports RP1 and RP2 shown in FIG. 2, and can be connected to the communication interface 15 of another non-instantaneous device UA via the relay paths RR1 and RR2.
  • the communication interface 15 may include not only the port but also a communication module according to the communication medium, the communication method, and the communication contract of the relay path RR.
  • the processor 11 When the non-instantaneous interruption device UA is configured by a computer as shown in FIG. 3, the processor 11 operates as each functional unit of the non-instantaneous interruption device UA by executing a program stored in the program memory 12. Can be done.
  • the processor 11 discloses in Patent Document 1 when a user data frame which is a main signal MS is input to the first user port UP1 but a user data signal which is a sub signal SS is not input to the second user port UP2. Similar to the conventional technique as described above, a sequence number is assigned to a user data frame and the data frame is duplicated. Then, the processor 11 sends the user data frame to which the sequence number is assigned to the two relay port RPs, so that the receiver-side non-interruption device UA is transmitted from each relay port RP via each relay path RR. Send them to. At this time, since the user data signal which is the sub signal SS is not input, no delay is added to the two transmitted user data frames.
  • the processor 11 finds that the user data frame which is the main signal MS is input to the first user port UP1 and the user data signal which is the sub signal SS is input to the second user port UP2, the processor 11 , Works as follows.
  • FIG. 4 is a flowchart showing an example of the transmission processing operation of the non-instantaneous interruption device UA in this case.
  • the program memory 12 of the non-instantaneous device UA stores a program necessary for executing the control process shown in this flowchart, and when the processor 11 executes the program, the processor 11 has no instantaneous interruption. It can operate as the delay conversion function unit 103 and the delay control function unit 104 of the disconnection device UA.
  • the assignment of the sequence number and the duplication of the main signal MS are the same as those of the prior art as disclosed in Patent Document 1, and thus the description thereof will be omitted here.
  • one frame of the user data frame frame sequence which is the main signal MS is input to the first user port UP1, and one bit of the user data signal data sequence which is the sub signal SS is input to the second user port UP2. Is input, the transmission processing operation shown in this flowchart is executed.
  • the processor 11 first converts the bits of the user data signal as the sub signal SS, which is the information transmitted on the sub signal channel, into the delay amount (step S101). .. For example, when the bit value of the user data signal is 0, the processor 11 sets the delay to 0 for the user data frame as the main signal MS transmitted from the first relay port RP1 to the first relay path RR1, and sets the delay to 0 for the second relay path RR1. Assuming that the user data frame transmitted from the relay port RP2 to the second relay path RR2 has a delay, the amount of the delay is the delay amount ⁇ .
  • the delay amount ⁇ is set to a value larger than the maximum value of the delay difference that each relay path RR will have.
  • the processor 11 compares the bit value of the user data signal as the sub signal SS, which is the information transmitted on the sub signal channel input this time, with the value of the immediately preceding bit, and 0 and 1 are inverted. Whether or not it is determined (step S102).
  • the value of the bit immediately before the comparison target is stored in the data memory 13.
  • the processor 11 updates and saves the bit value of the current user data signal in the data memory 13.
  • step S102 When it is determined in step S102 that the bit values are not inverted (NO in step S102), the processor 11 passes through one of the relay paths RR of the main signal MS transmitted on the main signal channel. A delay of a delay amount ⁇ is added to the user data frame to be transmitted (step S103). At this time, there is no delay (delay 0) in the user data frame transmitted via the other relay path RR. Which user data frame is to be delayed depends on the determination result in step S101. For example, when the bit value of the user data signal which is the sub signal SS is 0, the processor 11 delays the user data frame which is the main signal MS transmitted via the second relay path RR2 by the delay amount ⁇ . Gives a delay. Further, when the bit value of the user data signal which is the sub signal SS is 1, the processor 11 delays the user data frame which is the main signal MS transmitted via the first relay path RR1 by the delay amount ⁇ . Gives a delay.
  • the processor 11 sends a user data frame, which is a main signal MS, to the two relay port RPs, so that the processor 11 mainly sends the user data frame, which is the main signal MS, from each relay port RP to the receiving side non-interruption device UA via each relay path RR.
  • the signal MS is transmitted (step S104).
  • the processor 11 sends the main signal MS to the corresponding relay port RP after the delay amount ⁇ has elapsed from the main signal MS having no delay. Then, the processor 11 ends the transmission processing operation shown in this flowchart, and prepares for the input of the next main signal MS and sub signal SS.
  • step S102 when it is determined in step S102 that the bit values are inverted (YES in step S102), the processor 11 sends the user data which is the main signal MS to which the delay is given, which is sent to the relay port RP.
  • the time is adjusted until the sequence number of the frame matches the sequence number of the user data frame, which is the main signal MS without delay, which has been sent to the other relay port RP (step S105).
  • the waiting time ⁇ may be set (delay amount ⁇ ⁇ waiting time ⁇ ).
  • the processor 11 advances the control process to step S103.
  • the processor 11 waits for the standby time ⁇ and then passes through the first relay path RR1. A delay of a delay amount ⁇ is added to the user data frame which is the main signal MS to be transmitted. Further, when the bit value of the user data signal which is the sub signal SS changes from 1 to 0, the processor 11 waits for the standby time ⁇ and then transmits the data via the second relay path RR2. A delay of a delay amount ⁇ is added to the user data frame which is the signal MS.
  • the processor 11 proceeds with the control process in step S104, and sends a user data frame, which is the main signal MS, to each of the two relay port RPs at a timing according to the presence or absence of delay, so that each relay port A user data frame is transmitted from the RP to the non-instantaneous interruption device UA on the receiving side via each relay path RR. Then, the processor 11 ends the transmission processing operation shown in this flowchart, and prepares for the input of the next main signal MS and sub signal SS.
  • FIG. 5 is a schematic diagram for explaining the operation of the communication system according to the present embodiment.
  • the processor 11 performs the first relay port RP1 to the first in step S101. Let 0 be the delay amount of the main signal MS transmitted to the relay path RR1, and ⁇ be the delay amount of the main signal MS transmitted from the second relay port RP2 to the second relay path RR2. After that, in step S102, the processor 11 determines whether or not the bit value of the user data signal, which is the sub signal SS, is inverted with respect to the immediately preceding bit value.
  • step S102 Since the immediately preceding bit value does not exist in the first bit of the user data signal, the processor 11 determines that step S102 is NO, and the processor 11 advances the control process to step S103. Since the bit value of the user data signal was 0 in step S103, the processor 11 imparts a delay of a delay amount ⁇ to the main signal MS transmitted via the second relay path RR2. After that, in step S104, the processor 11 transmits a user data frame, which is the main signal MS, to each of the two relay port RPs at a timing according to the presence or absence of delay. As a result, as shown in the upper part of FIG. 5 (above the white arrow), the user data frame to which the sequence number 1 is assigned is transmitted from the first relay path RR1. At this time, since the user data frame has a delay in the second relay path RR2, it is not yet transmitted.
  • the user data frames to which the sequence numbers 2 to 4 are assigned are sequentially transmitted from the first relay path RR1.
  • the user data frame to which the sequence number 1 is assigned is transmitted at the timing when the delay amount ⁇ has elapsed from the transmission time of the corresponding user data frame from the first relay path RR1.
  • this timing is the timing at which the user data frame to which the sequence number 3 is assigned is transmitted from the first relay path RR1.
  • the user data frames to which the sequence numbers 2 to 4 are assigned are sequentially transmitted from the second relay path RR2.
  • the processor 11 sends the main signal MS from the first relay port RP1 to the first relay path RR1 in step S101.
  • the delay amount of the user data frame is ⁇ , and the delay amount of the user data frame transmitted from the second relay port RP2 to the second relay path RR2 is 0.
  • the processor 11 determines whether or not the bit value of the user data signal is 0 or 1 inverted with respect to the immediately preceding bit value.
  • step S105 the processor 11 has sent the sequence number of the delayed user data frame sent to the second relay port RP2 to the sequence number of the user data frame sent to the first relay port RP1 without delay.
  • the time of the waiting time ⁇ 1 is adjusted until it matches with 4.
  • step S103 and step S104 the processor 11 proceeds with the control process in step S103 and step S104.
  • the user data frame to which the sequence number 5 is assigned is transmitted from the second relay path RR2. At this time, since the user data frame has a delay in the first relay path RR1, it is not yet transmitted.
  • the user data frames to which the sequence numbers 6 and 7 are assigned are sequentially transmitted from the second relay path RR2.
  • the user data frame to which the sequence number 5 is assigned is transmitted at the timing when the delay amount ⁇ has elapsed from the transmission time of the corresponding user data frame from the second relay path RR2.
  • this timing is the timing at which the user data frame to which the sequence number 7 is assigned is transmitted from the second relay path RR2. Then, after that, the user data frames to which the sequence numbers 6 and 7 are assigned are sequentially transmitted from the first relay path RR1.
  • the processor 11 sends the main signal from the second relay port RP2 to the second relay path RR2 in the step S101.
  • the delay amount of the user data frame that is the MS is set to ⁇ , and the delay amount of the user data frame transmitted from the first relay port RP1 to the first relay path RR1 is set to 0.
  • the processor 11 determines that step S102 is YES, and advances the control process to step S105.
  • step S105 the processor 11 has sent the sequence number of the delayed user data frame sent to the first relay port RP1 to the sequence number of the user data frame sent to the second relay port RP2 without delay.
  • the waiting time ⁇ 2 is adjusted until it coincides with 7.
  • the processor 11 proceeds with the control process in step S103 and step S104.
  • the user data frame to which the sequence number 8 is assigned is transmitted from the first relay path RR1.
  • the user data frame has a delay in the second relay path RR2, it is not yet transmitted.
  • the user data frames to which the sequence numbers 9 to 12 are assigned are sequentially transmitted from the first relay path RR1.
  • the user data frame to which the sequence number 8 is assigned is transmitted at the timing when the delay amount ⁇ has elapsed from the transmission time of the corresponding user data frame from the first relay path RR1.
  • this timing is the timing at which the user data frame to which the sequence number 10 is assigned is transmitted from the first relay path RR1.
  • the user data frames to which the sequence numbers 8 to 12 are assigned are sequentially transmitted from the second relay path RR2.
  • the processor 11 sends the main signal from the first relay port RP1 to the first relay path RR1 in the step S101.
  • the delay amount of the user data frame that is the MS is set to ⁇ , and the delay amount of the user data frame transmitted from the second relay port RP2 to the second relay path RR2 is set to 0.
  • the processor 11 determines that step S102 is YES, and advances the control process to step S105.
  • step S105 the processor 11 has sent the sequence number of the delayed user data frame sent to the second relay port RP2 to the sequence number of the user data frame sent to the first relay port RP1 without delay.
  • the waiting time ⁇ 3 is adjusted until it coincides with 12.
  • the processor 11 proceeds with the control process in step S103 and step S104.
  • the user data frame to which the sequence number 13 is assigned is transmitted from the second relay path RR2.
  • the user data frame has a delay in the first relay path RR1, it is not yet transmitted.
  • the user data frames to which the sequence numbers 14 and later are assigned are sequentially transmitted from the second relay path RR2. Further, in the first relay path RR1, the user data frame to which the sequence number 13 is assigned is transmitted at the timing when the delay amount ⁇ has elapsed from the transmission time of the corresponding user data frame from the second relay path RR2. Then, after that, the user data frames to which the sequence numbers after the sequence number 14 are assigned are sequentially transmitted from the first relay path RR1.
  • the processor 11 When the first frame of the frame series of the user data frame which is the main signal MS is received by any relay port RP, the processor 11 also receives the first frame of the frame series of the user data frame by the other relay port RP. Wait for it. Then, if it is received by the other relay port RP, the sequence number assigned to it is deleted from one of the first frames of the frame series of the received user data frames, for example, the first-come-first-served user data frame. .. Then, the processor 11 sends a user data frame from which the sequence number has been deleted to the first user port UP1, so that the second high-speed user terminal on the receiving side is sent from the first user port UP1 via the first user path UR1. Send it to HST2. In addition, the user data frame that arrives later is discarded. Similarly, for the second and subsequent frames, the first-come-first-served user data frame is transmitted to the first user port UP1 and transmitted to the second high-speed user terminal HST2.
  • the processor 11 waits for the reception of the user data frame to which the same sequence number is assigned is set to a fixed time in consideration of the transmission delay in the relay path RR. If the other relay port RP does not receive the user data frame assigned the same sequence number even after this fixed time has elapsed, the processor 11 presumes that a frame loss has occurred due to one-way disconnection and has received the data frame. By sending the user data frame of the above to the first user port UP1, it may be transmitted to the second high-speed user terminal HST2.
  • the delay amount ⁇ is added, that is, the sub-signal SS is multiplexed, and the operation is as follows.
  • this multiplexing discrimination method is an example, and discrimination may be performed by another method such as transmitting an identification signal indicating the presence or absence of multiplexing in advance.
  • the present invention does not particularly limit the discrimination method. No.
  • FIG. 6 is a flowchart showing an example of the reception processing operation of the non-instantaneous interruption device UA in this case.
  • the program memory 12 of the non-instantaneous device UA stores a communication program necessary for executing the control process shown in the flowchart of the device, and the processor 11 executes the communication program so that the processor 11 can execute the communication program. It can operate as a main signal selection function unit 105, a sequence number deletion function unit 106, a route determination notification function unit 107, and a sub signal decoding function unit 108 of the non-instantaneous interruption device UA.
  • the processor 11 receives the user data frame from the relay port RP (step S111). Since the first frame of the frame series of the user data frame has already been received, this step S111 is skipped.
  • the processor 11 determines whether or not the sequence number assigned to the received user data frame is larger than the sequence number that has already been received (step S112).
  • the received sequence number to be compared is stored in the data memory 13.
  • step S112 When it is determined in step S112 that the sequence number assigned to the newly received user data frame is larger than that already received (YES in step S112), the processor 11 determines the received user data frame.
  • the sequence number assigned to the sequence number is deleted from (step S113).
  • the processor 11 stores the deleted sequence number in the data memory 13 for comparison in step S112.
  • the processor 11 sends a user data frame, which is the main signal MS from which the sequence number has been deleted, to the first user port UP1, so that the processor 11 can send the user data frame from the first user port UP1 to the receiving side via the first user path UR1.
  • the user data frame is transmitted to the second high-speed user terminal HST2 (step S114).
  • the processor 11 has transmitted the user data frame which is the main signal MS depending on whether the relay port RP that received the user data frame is the first relay port RP1 or the second relay port RP2.
  • the relay path RR is determined (step S115).
  • the processor 11 restores the user data signal, which is the sub signal SS, by assigning 0 to the first relay path RR1 and 1 to the second relay path RR2 from the determined relay path RR sequence (step S116). ..
  • the processor 11 sends a user data signal, which is a sub signal SS, to the second user port UP2, so that the second low-speed user terminal LST2 on the receiving side is sent from the second user port UP2 via the second user path UR2.
  • the user data signal is transmitted to (step S117).
  • the processor 11 ends the reception processing operation shown in this flowchart and prepares for the reception of the user data signal which is the next main signal MS.
  • step S112 If it is determined in step S112 that the sequence number assigned to the user data frame, which is the newly received main signal MS, is not larger than that already received (NO in step S112), the processor 11 discards the received user data frame (step S118). That is, if the newly received user data frame is a user data frame that has already been received, it will be discarded. Then, the processor 11 ends the reception processing operation shown in this flowchart and prepares for the reception of the user data signal which is the next main signal MS.
  • the RRs are the first relay path RR1 (sequence number 1), the first relay path RR1 (sequence number 2), the first relay path RR1 (sequence number 3), the first relay path RR1 (sequence number 4), and the second relay.
  • Route RR2 (sequence number 5), second relay path RR2 (sequence number 6), second relay path RR2 (sequence number 7), first relay path RR1 (sequence number 8), first relay path RR1 (sequence number 9).
  • step S116 the processor 11 assigns "0" to the first relay path RR1 and "1" to the second relay path RR2, so that the bit value of the user data signal "00000111000001 " is decoded.
  • NS the bit value of the user data signal
  • the non-instantaneous interruption device UA on the transmitting side the main signal to be transmitted on the main signal channel for each relay path RR according to the user data signal which is the sub signal to be transmitted on the sub signal channel.
  • the passage path of the main signal MS selected on a first-come, first-served basis in the non-instantaneous interruption device UA on the receiving side is intentionally changed.
  • the non-instantaneous interruption device UA on the receiving side selects the first-come-first-served user data frame as the main signal MS transmitted on the main signal channel, and based on the relay path RR to which the first-come-first-served user data frame is transmitted.
  • the user data signal which is the sub signal SS transmitted on the sub signal channel is decoded. This makes it possible to multiplex the communication of the main signal MS and the communication of the sub signal SS without assigning an identifier to the main signal MS in the redundant path.
  • FIG. 7 is a block diagram showing an example of the configuration of the non-instantaneous interruption device UA in the communication system according to the second embodiment of the present invention.
  • the configuration corresponding to the first embodiment is designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.
  • the difference from the first embodiment will be described.
  • the non-instantaneous interruption device UA has only one user port UP corresponding to the first user port UP1 in the first embodiment. That is, the user port UP is connected to the user path UR from the high-speed user terminal HST. In this embodiment, the second user port UP2 in the first embodiment is not provided.
  • the non-instantaneous interruption device UA in the present embodiment has a control function unit 110.
  • the control function unit 110 sub-signals control signals for network operation, management, and maintenance, such as Ethernet OAM (Ethernet Operations, Administration, Maintenance) functions such as life-and-death monitoring, frame loss measurement, and delay measurement. It is generated as a sub signal SS to be transmitted on the channel.
  • the control function unit 110 supplies the generated sub-signal SS to the delay conversion function unit 103.
  • the control function unit 110 may be realized by reading the program stored in the program memory 12 by the processor 11 and executing the program.
  • sub-signal decoding function unit 108 supplies the decoded sub-signal SS to the control function unit 110.
  • the sub signal SS can be an internal signal of the non-instantaneous interruption device UA.
  • FIG. 8 is a block diagram showing an example of the configuration of the non-instantaneous interruption device UA in the communication system according to the third embodiment of the present invention.
  • the configuration corresponding to the first embodiment is designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.
  • the difference from the first embodiment will be described.
  • the non-instantaneous interruption device UA has only one user port UP corresponding to the first user port UP1 in the first embodiment. That is, the user port UP is connected to the user path UR from the high-speed user terminal HST. In this embodiment, the second user port UP2 in the first embodiment is not provided.
  • the high-speed user terminal HST inputs both the main signal MS to be transmitted on the main signal channel and the sub signal SS to be transmitted on the sub signal channel to the non-instantaneous interruption device UA.
  • the main signal MS and the sub signal SS can be input as time series signals in which the main signal MS is input after all the bit sequences of the sub signal SS are input. Further, the main signal MS and the sub signal SS may be input to the non-instantaneous interruption device UA as superimposed signals in which the two signals are superimposed by some method.
  • the non-instantaneous interruption device UA in the present embodiment has a signal determination function unit 120.
  • the signal determination function unit 120 classifies the signal input to the user port UP into a main signal MS to be transmitted on the main signal channel and a sub signal SS to be transmitted on the sub signal channel.
  • the signal determination function unit 120 supplies the classified main signal MS to the sequence numbering function unit 101, and supplies the classified sub signal SS to the delay conversion function unit 103.
  • the signal determination function unit 120 may be realized by reading the program stored in the program memory 12 by the processor 11 and executing the program.
  • the signal determination function unit 120 includes a memory for temporarily storing the input signals.
  • the data memory 13 can be used as this memory.
  • the signal determination function unit 120 stores all the superposed signals of the main signal MS and the sub signal SS to be transmitted in the memory, and separates the main signal MS and the sub signal SS by a separation method according to the superimposition method.
  • the sub-signal decoding function unit 108 sends the decoded sub-signal SS to the user port UP, and transmits it to the high-speed user terminal HST on the receiving side via the user path UR.
  • the processor 11 that realizes the signal determination function unit 120 uses the main signal MS and the sub signal channel to transmit the signal input to the user port UP in the main signal channel. Classify into sub-signal SS to be transmitted. Then, the processor 11 supplies the classified main signal MS to the sequence numbering function unit 101, and supplies the classified sub signal SS to the delay conversion function unit 103. Since the subsequent operations are the same as those of the first embodiment, the description thereof will be omitted.
  • the same effect as that of the first embodiment can be obtained in the third embodiment as well. Further, the main signal MS and the sub signal SS input from one high-speed user terminal HST can be communicated with each other.
  • the non-instantaneous interruption device UA synthesizes the main signal MS from which the sequence number has been deleted and the decoded sub signal SS on the receiving side by a method corresponding to the input signal, and outputs a signal synthesizer from the user port UP. You may have.
  • FIG. 9 is a schematic diagram for explaining the operation of the communication system according to the fourth embodiment of the present invention.
  • the order-reversing frame SRF in which the frame order-reversal occurs is, for example, a user data frame to which the sequence number 4 shown in FIG. 9 is assigned, which is a frame that should originally arrive at the first relay port RP1. , Refers to the frame that has arrived at the second relay port RP2 first.
  • the frame loss FL means that the frame that should originally arrive is not received, for example, the user data frame shown by the dotted quadrangle in FIG.
  • one frame of the main signal MS does not represent one bit of the sub signal SS as in the first to third embodiments, but as shown in FIG. 9, a plurality of frames, for example, 5 frames 1 bit of the sub signal SS is represented by the main signal MS of.
  • the signal pattern of the sub-signal SS to be transmitted is redundantly transmitted by a predetermined number of first-come-first-served main signal MSs, and the receiving side receives the sub-signal SS according to the combination of the route determination results for the predetermined number of first-come-first-served main signal MSs.
  • FIG. 10 is a schematic diagram for showing an example of a schematic configuration of the communication system according to the fifth embodiment of the present invention and for explaining the operation.
  • the 1-1 low-speed user terminal LST1-1 that inputs the first sub-signal SS1 to be transmitted on the sub-signal channel and the 1-2 low-speed user terminal that inputs the second sub-signal SS1 that should also be transmitted on the sub-signal channel. Is connected to LST1-2.
  • the two first user terminals + ST1 are connected to the first non-instantaneous interruption device UA1.
  • the input 2-1 low-speed user terminal LST2-1 and the 2-2 low-speed user terminal LST2-2 to which the second sub-signal SS2 also received is input are connected. That is, two second low-speed user terminals LST2 are connected to the second non-instantaneous interruption device UA2.
  • FIG. 11 is a block diagram showing an example of the configuration of the non-instantaneous interruption device UA in the communication system according to the fifth embodiment.
  • the non-instantaneous interruption device UA in this embodiment has two user ports, that is, 2-1 as the second user port UP2 with respect to the configuration of the non-instantaneous interruption device UA in the first embodiment. It has a user port UP2-1 and a second user port UP2-2.
  • the 2-1 user port UP2-1 receives the first sub-signal SS1 input from the transmitting side 1-1 low-speed user terminal LST1-1 via the 2-1 user path UR2-1.
  • the 2nd-2 user port UP2-2 receives the second sub signal SS2 input from the 1st-2nd low-speed user terminal LST1-2 on the transmitting side via the 2nd-2nd user path UR2-2. It is also a port for transmitting the second sub-signal SS2 to be output to the 2nd low-speed user terminal LST2-2 on the receiving side via the 2-2 user path UR2-2.
  • the delay conversion function unit 103 converts the first sub-signal SS1 received in the 2-1 user port UP2-1 into a delay, and the second-2 user port UP2- The second sub-signal SS2 received in 2 is converted into a delay.
  • the delay control function unit 104 sends the main signal MS to which the two sequence numbers supplied from the main signal duplication function unit 102 are assigned to the two relay port RPs. Then, they are transmitted to the non-instantaneous interruption device UA on the receiving side via the redundant path, that is, the two relay paths RR.
  • the delay control function unit 104 sends the delay conversion function unit 104 to one of the two delay conversion results supplied from the delay conversion function unit 103. Based on this, the transmission timing of these two main signal MSs is controlled.
  • the delay control function unit 104 alternately switches between the transmission timing control of the main signal MS based on one of the two delay conversion results and the transmission timing control of the main signal MS based on the other of the two delay conversion results. , Sends the main signal MS to the two relay port RPs. This switching may be performed according to the number of frames of the main signal MS, or may be performed according to the time.
  • the sub-signal decoding function unit 108 decodes the sub-signal SS transmitted on the sub-signal channel based on the determination result notified from the route determination notification function unit 107, and the decoding result.
  • Is sent to the 2-1 user port UP2-1 if it is the first sub signal SS1 according to the number of frames or the time of the main signal MS, and it is transmitted via the 2-1 user path UR2-1. Then, it is transmitted to the 2-1 low-speed user terminal LST2-1 on the receiving side, and if it is the second sub signal SS2, it is transmitted to the 2-2 user port UP2-2, so that it is sent to the 2-2. It is transmitted to the 2nd 2nd low speed user terminal LST2-2 on the receiving side via the user path UR2-2.
  • the first non-instantaneous interruption device UA1 on the transmitting side adjusts the transmission timing of the main signal MS based on the delay conversion result of the first sub signal SS1.
  • the main signal is switched by the two relay paths RR while alternately switching between the 1 sub signal channel SSCH1 and the 2nd sub signal channel SSCH2 whose transmission timing of the main signal MS is adjusted based on the delay conversion result of the 2nd sub signal SS2. Transmit MS.
  • FIG. 10 shows an example of switching the sub signal channel by 5 frames of the main signal MS.
  • the order in which the frames of the main signal MS first arrive at the second non-instantaneous interruption device UA2 on the receiving side is the first relay path RR1 (relay port RP1) and the first relay path.
  • RR1 relay port RP1
  • first relay path RR1 relay port RP1
  • second relay path RR2 relay port RP2
  • second relay path RR2 relay port RP2
  • the sub-signal decoding function unit 108 of the second non-instantaneous interruption device UA2 decodes the data signal of "00011" based on the relay port RP to which the main signal MS arrives first, and decodes the data signal from the first user port UP1 to the first user port UP1.
  • 2-1 Sends to the low-speed user terminal LST2-1.
  • the sub-signal SS1 can be transmitted from the 1-1 low-speed user terminal LST1-1 to the 2-1 low-speed user terminal LST2-1.
  • the order in which the frames first arrive at the second non-interruption device UA2 is the first relay path RR1 (relay port RP1), the second relay path RR2 (relay port RP2), and the first.
  • the time division multiplexing method is adopted, and the first sub-signal SS and the second sub-signal SS2 can be transmitted while switching the sub-signal channels in time series according to the number of frames (or time).
  • the bit rate is 1 / n of the first embodiment according to the number n (n is an integer of 2 or more) of the sub signal channels (sub signal SS).
  • This sixth embodiment is also an example in which the sub signal channels are multiplexed and the main signal and the plurality of sub signals are transmitted.
  • FIG. 12 is a schematic diagram for showing an example of a schematic configuration of the communication system according to the sixth embodiment of the present invention and for explaining the operation.
  • m sub-signal channels (sub-signal SS) are provided by setting the bits assigned to each path to m bits. It is to be multiplexed (m is an integer of 1 or more). That is, if the relay path RR is 2 paths, 1 bit is assigned to 1 sub-signal channel (sub-signal SS), and if the relay path RR is 4 paths, 2 bits are assigned to 2 sub-signal channels, relay.
  • FIG. 12 is a block diagram showing an example of the configuration of the non-instantaneous interruption device UA in the communication system according to the sixth embodiment.
  • the non-instantaneous interruption device UA in this embodiment has two user ports, that is, the second user port UP2-1 and the second user port UP2-1 as the second user port UP2, as in the fifth embodiment.
  • -It is equipped with -2 user port UP2-2.
  • the 2-1 user port UP2-1 is connected to the 1-1 low-speed user terminal LST1-1 on the transmitting side or the 2-1 low-speed user terminal LST2- on the receiving side via the 2-1 user path UR2-1.
  • the 2nd 2nd user port UP2-2 is the 1st-2nd low-speed user terminal LST1-2 on the transmitting side or the 2-2 low-speed user terminal LST2- on the receiving side via the 2-2 user path UR2-2. Connected to 2.
  • the non-instantaneous interruption device UA in this embodiment has four ports as relay port RPs, that is, the first relay port RP1 and the second relay port RP2, with respect to the configuration of the non-instantaneous interruption device UA in the first embodiment. It includes a third relay port RP3 and a fourth relay port RP4.
  • the main signal duplication function unit 102 assigns the main signal MS to which the sequence number supplied from the sequence number assignment function unit 101 is assigned according to the number of redundant paths, that is, the number of relay ports of the non-instantaneous interruption device UA. Duplicate according to. In the present embodiment, since the non-instantaneous interruption device UA has four relay port RPs, the main signal duplication function unit 102 is subjected to a sequence number by the sequence number assigning function unit 101 so that the main signal MS is four. The three main signal MSs to which are assigned are duplicated. The main signal duplication function unit 102 supplies the main signal MS to which the four sequence numbers are assigned to the delay control function unit 104.
  • the delay conversion function unit 103 is based on the combination of the first sub-signal SS1 received at the 2-1 user port UP2-1 and the second sub-signal SS2 received at the 2-2 user port UP2-2.
  • the 1st and 2nd sub-signals SS1 and SS2 are converted into delays. For example, if the first and second sub-signals SS1 and SS2 are user data signals having a code sequence of 0, 1, the delay conversion function unit 103 is a combination of 0, 1 which is the value of each bit in the user data signal. Therefore, it is possible to determine which of the main signal MS transmitted from the first relay port RP1 to the fourth relay port RP4 has a delay.
  • the delay conversion function unit 103 determines the delay amount at each relay port RP.
  • the combination of (0,0) is assigned to the first relay port RP1, that is, the first relay path RR1.
  • (0,1) is to the second relay port RP2 (second relay path RR2)
  • (1,0) is to the third relay port RP3 (third relay path RR3)
  • (1,1) is. It is assigned to the fourth relay port RP4 (fourth relay path RR4), respectively.
  • the delay control function unit 104 sends the main signal MS to which the four sequence numbers supplied from the main signal duplication function unit 102 are assigned to the four relay port RPs, so that they are redundant paths, that is, four relay paths. It is transmitted to the non-instantaneous interruption device UA on the receiving side via the RR.
  • the delay control function unit 104 uses the four delay conversion results supplied from the delay conversion function unit 103. Controls the transmission timing of the main signal MS.
  • the sub-signal decoding function unit 108 decodes the first and second sub-signals SS1 and SS2 transmitted on the sub-signal channel based on the determination result notified from the route determination notification function unit 107, and obtains the respective decoding results.
  • 2-1 user port UP2-1 and 2-2 user port UP2-2 they are sent to the receiving side via the 2-1 and 2-2 user paths UR2-1 and UR2-2.
  • 2-1 and 2-2 Low-speed user terminals LST2-1 and LST2-2 are transmitted.
  • the combination of the bit values of the first and second sub-signals SS1 and SS2 is (0,0), (0,1), (1,0), ( The delay of the main signal MS transmitted on the first to fourth relay paths RR1 to RR4 is determined according to which of 1 and 1).
  • the data values of the first sub-signal SS1 and the second sub-signal SS2 are "00011101" and "00011000", respectively.
  • the first relay path RR1 (first relay port RP1) is transmitted without delay from the combination (0, 0), and the second to second relay paths are transmitted.
  • the relay paths RR2 to RR4 (second to fourth relay ports RP2 to RP4) are transmitted with a delay.
  • the second relay path RR2 (second relay port RP2) is transmitted without delay, and the first, third and fourth relay paths RR1 and RR3 are transmitted.
  • RR4 (1st, 3rd and 4th relay ports RR1, RP3, RP4) are transmitted with a delay.
  • the third relay path RR3 third relay port RP3 is transmitted without delay, and the first, second and fourth relay paths RR1, RR2, RR4 (third).
  • the first, second and fourth relay ports RR1, RP2, RP4) are transmitted with a delay.
  • the fourth relay path RR4 (fourth relay port RP4) is transmitted without delay, and the first to third relay paths RR1 to RR3 (first to third relays) are transmitted. Ports RP1 to RP3) are transmitted with a delay.
  • the bit value of the first sub signal SS1 depends on which relay path RR the first frame of the main signal MS passed through, that is, which relay port RP received the first frame. And the bit value of the second sub signal SS2 are decoded.
  • the first-come-first-served frame is the first relay port RP1, the first relay port RP1, the first relay port RP1, the fourth relay port RP4, the fourth relay port RP4, the third relay port RP3, and the first relay port. It becomes RP1 and the third relay port RP3.
  • the combination of the bit value of the first sub signal SS1 and the bit value of the second sub signal SS2 is (0,0), (0,0), (0,0), (1,1), (1,1). Since it is 1), (1,0), (0,0), (1,0), it is the 2-1 from the 2-1 user port UP2-1 via the 2-1 route UR2-1.
  • a data signal of the bit sequence "00011101" is transmitted to the low-speed user terminal LST2-1. Further, a data signal of the bit sequence "00011000” is transmitted from the 2nd 2nd user port UP2-2 to the 2nd-2nd low-speed user terminal LST2-2 via the 2nd path UR2-2.
  • the sub signal channel (secondary) transmitted in one frame of the main signal MS The information amount m bits of the signal SS) can be transmitted as 1-bit m-multiplexing, that is, 1 bit of each of the m sub-signals can be transmitted as m-multiplexing in one frame of the main signal MS.
  • the bit rate is 1 / m of the first embodiment.
  • the sub-signal channels of are multiplexed, various multiplexing is possible depending on the value of m.
  • 3 bits (0,0,0 / 0,0,1 / 0,1,0 / 0,1,1/1,0,0 / 1,0,1 / 1,1,0 / 1,1,1 ) can be assigned to multiplex the three sub-signal channels.
  • the 3-bit value indicates (bit value of the first sub-signal SS1, bit value of the second sub-signal SS2, bit value of the third sub-signal SS3).
  • the sub-signal channel is described as low-speed communication, but the present invention is not limited to low-speed communication and data signal communication, and may be normal user frame communication. Of course.
  • each embodiment includes, for example, magnetic disks (floppy (registered trademark) disks, hard disks, etc.) and optical disks (CD-ROM, DVD, MO) as programs (software means) that can be executed by a computer (computer).
  • a computer computer
  • Etc. it can be stored in a recording medium such as a semiconductor memory (ROM, RAM, flash memory, etc.), or it can be transmitted and distributed by a communication medium.
  • the program stored on the medium side also includes a setting program for configuring the software means (including not only the execution program but also the table and the data structure) to be executed by the computer in the computer.
  • a computer that realizes this device reads a program recorded on a recording medium, constructs software means by a setting program in some cases, and executes the above-described processing by controlling the operation by the software means.
  • the recording medium referred to in the present specification is not limited to distribution, and includes storage media such as magnetic disks and semiconductor memories provided in devices connected inside a computer or via a network.
  • the present invention is not limited to the above embodiment, and can be variously modified at the implementation stage without departing from the gist thereof.
  • each embodiment may be carried out in combination as appropriate as possible, in which case the combined effect can be obtained.
  • the above-described embodiment includes inventions at various stages, and various inventions can be extracted by an appropriate combination in a plurality of disclosed constitutional requirements.

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Abstract

Selon un mode de réalisation, un système de communication effectue une communication multiplexée d'un signal principal et d'au moins un sous-signal au moyen de trajets redondants entre un dispositif de transmission et un dispositif de réception. Le dispositif de transmission est pourvu d'une unité de duplication de signal principal qui duplique le signal principal à communiquer sur un canal de signal principal conformément au nombre de trajets redondants, et d'une unité de retard qui ajuste la synchronisation de sortie du signal principal pour chacun des trajets redondants d'après le sous-signal ou les sous-signaux à communiquer sur un canal de sous-signal, puis transmet les signaux principaux aux trajets redondants. Le dispositif de réception est pourvu d'une unité de sélection de signal principal qui sélectionne l'un des signaux principaux communiqués sur le canal de signal principal conformément à l'heure de réception des signaux principaux passant par les trajets redondants, ainsi que d'une unité de décodage de sous-signal qui décode au moins un sous-signal communiqué sur le canal de sous-signal d'après les trajets redondants par lesquels passe le signal principal sélectionné.
PCT/JP2020/008700 2020-03-02 2020-03-02 Système de communication, dispositif de transmission, dispositif de réception, procédé de communication et programme WO2021176520A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US17/908,590 US20230087755A1 (en) 2020-03-02 2020-03-02 Communication system, transmitter, receiver, and communication method and program
PCT/JP2020/008700 WO2021176520A1 (fr) 2020-03-02 2020-03-02 Système de communication, dispositif de transmission, dispositif de réception, procédé de communication et programme
JP2022504779A JP7327638B2 (ja) 2020-03-02 2020-03-02 通信システム、送信装置、受信装置、通信方法及びプログラム

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023242925A1 (fr) * 2022-06-13 2023-12-21 日本電信電話株式会社 Système de communication et programme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016111470A (ja) * 2014-12-04 2016-06-20 富士通株式会社 伝送システム、伝送システムにおける伝送時間差測定方法、及び、ノード
JP2016116056A (ja) * 2014-12-15 2016-06-23 株式会社日立製作所 伝送装置及び伝送方法
JP2017163216A (ja) * 2016-03-07 2017-09-14 日本電信電話株式会社 マルチレーン伝送方法及びマルチレーン伝送システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016111470A (ja) * 2014-12-04 2016-06-20 富士通株式会社 伝送システム、伝送システムにおける伝送時間差測定方法、及び、ノード
JP2016116056A (ja) * 2014-12-15 2016-06-23 株式会社日立製作所 伝送装置及び伝送方法
JP2017163216A (ja) * 2016-03-07 2017-09-14 日本電信電話株式会社 マルチレーン伝送方法及びマルチレーン伝送システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023242925A1 (fr) * 2022-06-13 2023-12-21 日本電信電話株式会社 Système de communication et programme

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